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■美国煤矿区煤层气的开发 煤层气是与煤炭伴生的赋存在煤层中的气体,主要成分为甲烷,1m~3甲烷的燃烧值相当于1.14公斤的标准煤炭。在煤矿,煤层气又称为瓦斯,是煤矿生产中最大的安全隐患,如直接排放,会严重破坏人类生存环境,倘若加以有效利用则是优质洁净能源。 甲烷作为一种温室气体对全球变暖的影响力是二氧化碳的21倍,从数量上来说是仅次于二氧化碳的第二大温室气体。在美国,煤矿甲烷排放作为人类
■ Development of CBM in Coal Mining Areas in the United States Coalbed methane (CBM) is a gas that is associated with coal and is present in coal seams. The main component is methane, and the burning value of 1m~3 methane is equivalent to 1.14kg of standard coal. In coal mines, coal seam gas is also called gas. It is the biggest potential safety hazard in coal mine production. If it is directly discharged, it will seriously damage the human living environment. If it is used effectively, it will be a high-quality clean energy source. As a greenhouse gas, the impact of global warming on carbon dioxide is 21 times that of carbon dioxide, which is second largest greenhouse gas after carbon dioxide. In the United States, coal mine methane emissions as human